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Finding the Fourth Proportional to 14,520.71, 21,784.10 and 4,525.21

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Solution

The fourth proportional to 14,520.71, 21,784.10 and 4,525.21 is: 6,788.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,520.71 : 21,784.10 = 4,525.21 : x
  2. Step 2: Convert to fraction form
    14,520.71/21,784.10 = 4,525.21/x
  3. Step 3: Cross multiply
    14,520.71x = 21,784.10 × 4,525.21
  4. Step 4: Simplify right side
    14,520.71x = 98,577,495.61
  5. Step 5: Solve for x
    x = 98,577,495.61/14,520.71
  6. Step 6: Final answer
    x = 6,788.75

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.